Signs and Symbols Section
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Ebbinghaus illusion
Ebbinghaus illusion

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Ebbinghaus illusion label
Ebbinghaus illusion label

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Hering illusion
Hering illusion

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Hering illusion label
Hering illusion label

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Hermann grid illusion
Hermann grid illusion

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Hermann grid illusion label
Hermann grid illusion label

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Kanizsa triangle
Kanizsa triangle

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Kanizsa triangle label
Kanizsa triangle label

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Mach bands
Mach bands

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Mach bands label
Mach bands label

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Muller Lyer illusion
Muller Lyer illusion

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Muller Lyer illusion label
Muller Lyer illusion label

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Munker White illusion
Munker White illusion

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Munker White illusion label
Munker White illusion label

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Orbison Illusion
Orbison Illusion

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Orbison Illusion label
Orbison Illusion label

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Perspective train station optical illusion
Perspective train station optical illusion

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not a spiral
not a spiral

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parallel lines at sunrise
parallel lines at sunrise

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parallel lines at sunrise label
parallel lines at sunrise label

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